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3M AC-250 A-1/6 Aerospace Sealant

Category Polymer , Thermoset
Manufacturer 3M
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF 3M AC-250 A-1/6 Aerospace Sealant.pdf
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Material Notes:
3M Aerospace Sealant AC-250 A-1/6 is a two-part, low temperature curing polysulfide, quick repair sealant for integral fuel tank and fuselage sealing applications. The mixed compound is a pourable liquid which can be applied with a spatula, extrusion gun, roller, or brush. It will cure to a fuel-resistant rubber at temperatures above -6.7°C.Information provided by 3M
Physical Properties Metric English Comments
Density 1.61 g/cc
0.0582 lb/in³
AMS-S83318
Volatiles <= 11 %
<= 11 %
Brookfield Viscosity 100000 - 400000 cP
100000 - 400000 cP
Base, RVF #6 sp @ 2 rpm
Mechanical Properties Metric English Comments
Hardness, Shore A 40
40
Hydrolytic Stability; AMS-S83318
55
55
AMS-S83318
Tensile Strength at Break 1.52 MPa

@Temperature 60.0 °C,
Time 1.21e+6 sec
220 psi

@Temperature 140 °F,
Time 336 hour
JRF; AMS-S83318
2.14 MPa

@Temperature 121 °C,
Time 605000 sec
310 psi

@Temperature 250 °F,
Time 168 hour
JRF; AMS-S83318
2.07 MPa

@Time 1.21e+6 sec
300 psi

@Time 336 hour
Standard Cure; AMS-S83318
Elongation at Break 180 %

@Temperature 121 °C,
Time 605000 sec
180 %

@Temperature 250 °F,
Time 168 hour
JRF; AMS-S83318
225 %

@Temperature 60.0 °C,
Time 1.21e+6 sec
225 %

@Temperature 140 °F,
Time 336 hour
JRF; AMS-S83318
220 %

@Time 1.21e+6 sec
220 %

@Time 336 hour
Standard Cure; AMS-S83318
Peel Strength 3.68 kN/m

@Temperature 60.0 °C,
Time 605000 sec
21.0 pli

@Temperature 140 °F,
Time 168 hour
JRF, Stainless Steel; AMS-S83318
3.68 kN/m

@Temperature 60.0 °C,
Time 605000 sec
21.0 pli

@Temperature 140 °F,
Time 168 hour
JRF/SW, Alodine; AMS-S83318
4.21 kN/m

@Temperature 60.0 °C,
Time 605000 sec
24.0 pli

@Temperature 140 °F,
Time 168 hour
JRF/SW, MIL-C-27725; AMS-S83318
4.21 kN/m

@Temperature 60.0 °C,
Time 605000 sec
24.0 pli

@Temperature 140 °F,
Time 168 hour
JRF/SW, Alclad; AMS-S83318
4.38 kN/m

@Temperature 60.0 °C,
Time 605000 sec
25.0 pli

@Temperature 140 °F,
Time 168 hour
JRF, MIL-C-27725; AMS-S83318
4.38 kN/m

@Temperature 60.0 °C,
Time 605000 sec
25.0 pli

@Temperature 140 °F,
Time 168 hour
JRF, Alclad; AMS-S83318
4.38 kN/m

@Temperature 60.0 °C,
Time 605000 sec
25.0 pli

@Temperature 140 °F,
Time 168 hour
JRF, Titanium; AMS-S83318
4.56 kN/m

@Temperature 60.0 °C,
Time 605000 sec
26.0 pli

@Temperature 140 °F,
Time 168 hour
JRF/SW, Stainless Steel; AMS-S83318
4.56 kN/m

@Temperature 60.0 °C,
Time 605000 sec
26.0 pli

@Temperature 140 °F,
Time 168 hour
JRF, Alodine; AMS-S83318
4.73 kN/m

@Temperature 60.0 °C,
Time 605000 sec
27.0 pli

@Temperature 140 °F,
Time 168 hour
JRF/SW, Titanium; AMS-S83318
Thermal Properties Metric English Comments
Maximum Service Temperature, Air 121 °C
250 °F
AMS-S83318
Minimum Service Temperature, Air -54.0 °C
-65.2 °F
AMS-S83318
Processing Properties Metric English Comments
Cure Time 70.2 min

@Temperature 25.0 °C
1.17 hour

@Temperature 77.0 °F
Tack-Free Time
120 min

@Temperature 25.0 °C
2.00 hour

@Temperature 77.0 °F
420 min

@Temperature 4.40 °C
7.00 hour

@Temperature 39.9 °F
Tack-Free Time
480 min

@Temperature 4.40 °C
8.00 hour

@Temperature 39.9 °F
720 min

@Temperature -6.70 °C
12.0 hour

@Temperature 19.9 °F
Tack-Free Time
840 min

@Temperature -6.70 °C
14.0 hour

@Temperature 19.9 °F
Shelf Life 6.00 Month

@Temperature <=26.7 °C
6.00 Month

@Temperature <=80.1 °F
Descriptive Properties Value Comments
Alkalinity 13
Appearance Dark Brown
Accelerator
Gray
White
Base
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